Anti-caking agent salt complying with the national standard will not cause greater harm to human body. Anti-caking agent salt is composed of potassium ferricyanide, which is a kind of additive that can be used in food manufacturing. It is mostly used in salt processing to prevent salt from caking due to humidity. The structure of potassium ferricyanide is very stable and will not change at temperatures up to 400℃, which is much higher than the temperature required for cooking, therefore, potassium ferricyanide will not decompose into potassium cyanide substances that are toxic and harmful to human beings at high temperatures of cooking, so there is no need to be overly concerned about it. Potassium ferricyanide is still a relatively safe food additive and does not cause substantial harm to human beings.